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Microsoft: New Windows LNK spoofing issues aren't vulnerabilities
Winsage
February 13, 2026

Microsoft: New Windows LNK spoofing issues aren’t vulnerabilities

Security researcher Wietze Beukema revealed vulnerabilities in Windows LK shortcut files at the Wild West Hackin' Fest, which could allow attackers to deploy harmful payloads. He identified four undocumented techniques that manipulate these shortcut files, obscuring malicious targets from users. The vulnerabilities exploit inconsistencies in how Windows Explorer handles conflicting target paths, allowing for deceptive file properties. One technique involves using forbidden Windows path characters to create misleading paths, while another manipulates LinkTargetIDList values. The most sophisticated method alters the EnvironmentVariableDataBlock structure to present a false target in the properties window while executing malicious commands in the background. Microsoft declined to classify the EnvironmentVariableDataBlock issue as a security vulnerability, stating that exploitation requires user interaction and does not breach security boundaries. They emphasized that Windows recognizes shortcut files as potentially dangerous and provides warnings when opening them. However, Beukema noted that users often ignore these warnings. The vulnerabilities share similarities with CVE-2025-9491, which has been exploited by various state-sponsored and cybercrime groups. Microsoft initially did not address CVE-2025-9491 but later modified LNK files to mitigate the vulnerability after it was widely exploited.
U.S. CISA adds a flaw in Microsoft Windows to its Known Exploited Vulnerabilities catalog
Winsage
January 14, 2026

U.S. CISA adds a flaw in Microsoft Windows to its Known Exploited Vulnerabilities catalog

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added a Microsoft Windows vulnerability, CVE-2026-20805, to its Known Exploited Vulnerabilities (KEV) catalog, with a CVSS score of 8.7. This vulnerability, part of the January 2026 Patch Tuesday updates, affects the Windows Desktop Window Manager and allows attackers to leak memory information, potentially aiding in further exploits. Federal Civilian Executive Branch agencies must address this vulnerability by February 3, 2026, as mandated by Binding Operational Directive 22-01.
Windows LNK UI Spoofing Vulnerability Weaponized for Remote Code Execution
Winsage
October 31, 2025

Windows LNK UI Spoofing Vulnerability Weaponized for Remote Code Execution

A cyber espionage campaign targeting European diplomatic institutions has been attributed to the Chinese-affiliated threat actor UNC6384, which exploits the ZDI-CAN-25373 vulnerability in Windows shortcut files. The campaign, noted for its use of social engineering tactics that mimic legitimate diplomatic events, has specifically targeted entities in Hungary, Belgium, and surrounding European nations between September and October 2025. The attack utilizes spearphishing emails with malicious LNK files related to European Commission and NATO meetings, leading to the deployment of PlugX, a remote access trojan. The attack chain involves a weaponized LNK file that executes PowerShell commands to unpack a tar archive containing a malicious DLL and an encrypted payload. UNC6384 employs advanced techniques to evade detection, including dynamic loading of Windows API functions and anti-analysis measures. The malware allows extensive espionage activities and creates hidden directories for persistent access. Recommendations for organizations include disabling automatic LNK file resolution, blocking known command and control domains, and enhancing user training to defend against such threats.
silver Android smartphone
Winsage
October 31, 2025

Windows LNK UI Spoofing Vulnerability Weaponized for Remote Code Execution

A cyber espionage campaign has been launched by the Chinese-affiliated threat actor UNC6384, targeting European diplomatic institutions using a vulnerability in the Windows shortcut (LNK) user interface, identified as ZDI-CAN-25373. This vulnerability was disclosed in March 2025. Between September and October 2025, entities in Hungary, Belgium, and neighboring European nations were specifically targeted. The attack utilizes spearphishing emails with conference-themed LNK files that exploit the Windows vulnerability to execute PowerShell commands, leading to the deployment of the PlugX remote access trojan (RAT). The attack sequence involves a weaponized LNK file that unpacks a tar archive containing a legitimate Canon printer assistant executable, a malicious DLL, and an encrypted payload. The Canon binary, despite being digitally signed, loads the malicious DLL which injects the PlugX payload into memory. The malware employs anti-analysis techniques and creates a hidden directory for persistent access. Recommendations for organizations include disabling automatic LNK file resolution, blocking known command and control domains, and monitoring for DLL side-loading attacks.
Patching required for exploited Windows vulnerability
Winsage
October 22, 2025

Patching required for exploited Windows vulnerability

Microsoft is facing a significant security vulnerability in the Windows Server Message Block (SMB) client, which has been added to the US Cybersecurity and Infrastructure Security Agency (CISA) Known Exploited Vulnerabilities (KEV) Catalog. Despite a patch being released, the flaw, designated as CVE-2025-33073 and rated with a CVSS score of 8.8, remains a target for exploitation. The vulnerability allows attackers to connect a Windows system to a malicious SMB server, enabling remote execution of plans with elevated access privileges. CISA has mandated that all federal agencies must install the update by November 10, 2025, and encourages private organizations to assess their patch status and consider temporary measures if immediate updates are not possible.
CISA Issues Warning Over Microsoft Windows Vulnerability Actively Exploited by Attackers
Winsage
October 17, 2025

CISA Issues Warning Over Microsoft Windows Vulnerability Actively Exploited by Attackers

CVE-2025-59230 is a significant vulnerability affecting Microsoft Windows, classified as an improper access control flaw that allows authorized attackers to escalate their privileges on compromised systems. It is embedded within the Windows Remote Access Connection Manager and enables attackers to execute malicious code with elevated rights, access sensitive data, and move laterally across network segments. CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on October 14, mandating federal civilian executive branch agencies to apply security patches by November 4, in accordance with Binding Operational Directive 22-01. Organizations are encouraged to apply Microsoft’s security updates promptly, follow BOD 22-01 guidance, and isolate affected systems if patches cannot be applied.
silver Android smartphone
Winsage
June 18, 2025

XDSpy Threat Actors Leverages Windows LNKs Zero-Day Vulnerability to Attack Windows System Users

A cyber espionage campaign attributed to the XDSpy threat actor has been discovered, exploiting a zero-day vulnerability in Windows shortcut files identified as “ZDI-CAN-25373.” This vulnerability allows attackers to conceal executed commands within specially crafted shortcut files. XDSpy has primarily targeted government entities in Eastern Europe and Russia since its activities became known in 2020. Researchers from HarfangLab found malicious LNK files exploiting this vulnerability in mid-March, revealing issues with how Windows parses LNK files. The infection begins with a ZIP archive containing a malicious LNK file, which triggers a complex Windows shell command to execute malicious components while displaying a decoy document. This command extracts and executes a first-stage malware called “ETDownloader,” which establishes persistence and downloads a second-stage payload known as “XDigo.” The XDigo implant, written in Go, collects sensitive information and employs encryption for data exfiltration. This campaign represents an evolution in XDSpy's tactics, combining zero-day exploitation with advanced multi-stage payloads.
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